diff options
Diffstat (limited to 'dom/webgpu/ipc/WebGPUChild.cpp')
| -rw-r--r-- | dom/webgpu/ipc/WebGPUChild.cpp | 1249 |
1 files changed, 1249 insertions, 0 deletions
diff --git a/dom/webgpu/ipc/WebGPUChild.cpp b/dom/webgpu/ipc/WebGPUChild.cpp new file mode 100644 index 0000000000..77a9556a2d --- /dev/null +++ b/dom/webgpu/ipc/WebGPUChild.cpp @@ -0,0 +1,1249 @@ +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "WebGPUChild.h" +#include "js/RootingAPI.h" +#include "js/String.h" +#include "js/TypeDecls.h" +#include "js/Value.h" +#include "js/Warnings.h" // JS::WarnUTF8 +#include "mozilla/Attributes.h" +#include "mozilla/EnumTypeTraits.h" +#include "mozilla/dom/Console.h" +#include "mozilla/dom/Promise.h" +#include "mozilla/dom/ScriptSettings.h" +#include "mozilla/dom/WebGPUBinding.h" +#include "mozilla/dom/GPUUncapturedErrorEvent.h" +#include "mozilla/webgpu/ValidationError.h" +#include "mozilla/webgpu/WebGPUTypes.h" +#include "mozilla/webgpu/ffi/wgpu.h" +#include "Adapter.h" +#include "DeviceLostInfo.h" +#include "PipelineLayout.h" +#include "Sampler.h" +#include "CompilationInfo.h" +#include "mozilla/ipc/RawShmem.h" +#include "nsGlobalWindowInner.h" + +namespace mozilla::webgpu { + +NS_IMPL_CYCLE_COLLECTION(WebGPUChild) + +void WebGPUChild::JsWarning(nsIGlobalObject* aGlobal, + const nsACString& aMessage) { + const auto& flatString = PromiseFlatCString(aMessage); + if (aGlobal) { + dom::AutoJSAPI api; + if (api.Init(aGlobal)) { + JS::WarnUTF8(api.cx(), "%s", flatString.get()); + } + } else { + printf_stderr("Validation error without device target: %s\n", + flatString.get()); + } +} + +static ffi::WGPUCompareFunction ConvertCompareFunction( + const dom::GPUCompareFunction& aCompare) { + // Value of 0 = Undefined is reserved on the C side for "null" semantics. + return ffi::WGPUCompareFunction(UnderlyingValue(aCompare) + 1); +} + +static ffi::WGPUTextureFormat ConvertTextureFormat( + const dom::GPUTextureFormat& aFormat) { + ffi::WGPUTextureFormat result = {ffi::WGPUTextureFormat_Sentinel}; + switch (aFormat) { + case dom::GPUTextureFormat::R8unorm: + result.tag = ffi::WGPUTextureFormat_R8Unorm; + break; + case dom::GPUTextureFormat::R8snorm: + result.tag = ffi::WGPUTextureFormat_R8Snorm; + break; + case dom::GPUTextureFormat::R8uint: + result.tag = ffi::WGPUTextureFormat_R8Uint; + break; + case dom::GPUTextureFormat::R8sint: + result.tag = ffi::WGPUTextureFormat_R8Sint; + break; + case dom::GPUTextureFormat::R16uint: + result.tag = ffi::WGPUTextureFormat_R16Uint; + break; + case dom::GPUTextureFormat::R16sint: + result.tag = ffi::WGPUTextureFormat_R16Sint; + break; + case dom::GPUTextureFormat::R16float: + result.tag = ffi::WGPUTextureFormat_R16Float; + break; + case dom::GPUTextureFormat::Rg8unorm: + result.tag = ffi::WGPUTextureFormat_Rg8Unorm; + break; + case dom::GPUTextureFormat::Rg8snorm: + result.tag = ffi::WGPUTextureFormat_Rg8Snorm; + break; + case dom::GPUTextureFormat::Rg8uint: + result.tag = ffi::WGPUTextureFormat_Rg8Uint; + break; + case dom::GPUTextureFormat::Rg8sint: + result.tag = ffi::WGPUTextureFormat_Rg8Sint; + break; + case dom::GPUTextureFormat::R32uint: + result.tag = ffi::WGPUTextureFormat_R32Uint; + break; + case dom::GPUTextureFormat::R32sint: + result.tag = ffi::WGPUTextureFormat_R32Sint; + break; + case dom::GPUTextureFormat::R32float: + result.tag = ffi::WGPUTextureFormat_R32Float; + break; + case dom::GPUTextureFormat::Rg16uint: + result.tag = ffi::WGPUTextureFormat_Rg16Uint; + break; + case dom::GPUTextureFormat::Rg16sint: + result.tag = ffi::WGPUTextureFormat_Rg16Sint; + break; + case dom::GPUTextureFormat::Rg16float: + result.tag = ffi::WGPUTextureFormat_Rg16Float; + break; + case dom::GPUTextureFormat::Rgba8unorm: + result.tag = ffi::WGPUTextureFormat_Rgba8Unorm; + break; + case dom::GPUTextureFormat::Rgba8unorm_srgb: + result.tag = ffi::WGPUTextureFormat_Rgba8UnormSrgb; + break; + case dom::GPUTextureFormat::Rgba8snorm: + result.tag = ffi::WGPUTextureFormat_Rgba8Snorm; + break; + case dom::GPUTextureFormat::Rgba8uint: + result.tag = ffi::WGPUTextureFormat_Rgba8Uint; + break; + case dom::GPUTextureFormat::Rgba8sint: + result.tag = ffi::WGPUTextureFormat_Rgba8Sint; + break; + case dom::GPUTextureFormat::Bgra8unorm: + result.tag = ffi::WGPUTextureFormat_Bgra8Unorm; + break; + case dom::GPUTextureFormat::Bgra8unorm_srgb: + result.tag = ffi::WGPUTextureFormat_Bgra8UnormSrgb; + break; + case dom::GPUTextureFormat::Rgb9e5ufloat: + result.tag = ffi::WGPUTextureFormat_Rgb9e5Ufloat; + break; + case dom::GPUTextureFormat::Rgb10a2unorm: + result.tag = ffi::WGPUTextureFormat_Rgb10a2Unorm; + break; + case dom::GPUTextureFormat::Rg11b10float: + result.tag = ffi::WGPUTextureFormat_Rg11b10Float; + break; + case dom::GPUTextureFormat::Rg32uint: + result.tag = ffi::WGPUTextureFormat_Rg32Uint; + break; + case dom::GPUTextureFormat::Rg32sint: + result.tag = ffi::WGPUTextureFormat_Rg32Sint; + break; + case dom::GPUTextureFormat::Rg32float: + result.tag = ffi::WGPUTextureFormat_Rg32Float; + break; + case dom::GPUTextureFormat::Rgba16uint: + result.tag = ffi::WGPUTextureFormat_Rgba16Uint; + break; + case dom::GPUTextureFormat::Rgba16sint: + result.tag = ffi::WGPUTextureFormat_Rgba16Sint; + break; + case dom::GPUTextureFormat::Rgba16float: + result.tag = ffi::WGPUTextureFormat_Rgba16Float; + break; + case dom::GPUTextureFormat::Rgba32uint: + result.tag = ffi::WGPUTextureFormat_Rgba32Uint; + break; + case dom::GPUTextureFormat::Rgba32sint: + result.tag = ffi::WGPUTextureFormat_Rgba32Sint; + break; + case dom::GPUTextureFormat::Rgba32float: + result.tag = ffi::WGPUTextureFormat_Rgba32Float; + break; + case dom::GPUTextureFormat::Depth32float: + result.tag = ffi::WGPUTextureFormat_Depth32Float; + break; + case dom::GPUTextureFormat::Bc1_rgba_unorm: + result.tag = ffi::WGPUTextureFormat_Bc1RgbaUnorm; + break; + case dom::GPUTextureFormat::Bc1_rgba_unorm_srgb: + result.tag = ffi::WGPUTextureFormat_Bc1RgbaUnormSrgb; + break; + case dom::GPUTextureFormat::Bc4_r_unorm: + result.tag = ffi::WGPUTextureFormat_Bc4RUnorm; + break; + case dom::GPUTextureFormat::Bc4_r_snorm: + result.tag = ffi::WGPUTextureFormat_Bc4RSnorm; + break; + case dom::GPUTextureFormat::Bc2_rgba_unorm: + result.tag = ffi::WGPUTextureFormat_Bc2RgbaUnorm; + break; + case dom::GPUTextureFormat::Bc2_rgba_unorm_srgb: + result.tag = ffi::WGPUTextureFormat_Bc2RgbaUnormSrgb; + break; + case dom::GPUTextureFormat::Bc3_rgba_unorm: + result.tag = ffi::WGPUTextureFormat_Bc3RgbaUnorm; + break; + case dom::GPUTextureFormat::Bc3_rgba_unorm_srgb: + result.tag = ffi::WGPUTextureFormat_Bc3RgbaUnormSrgb; + break; + case dom::GPUTextureFormat::Bc5_rg_unorm: + result.tag = ffi::WGPUTextureFormat_Bc5RgUnorm; + break; + case dom::GPUTextureFormat::Bc5_rg_snorm: + result.tag = ffi::WGPUTextureFormat_Bc5RgSnorm; + break; + case dom::GPUTextureFormat::Bc6h_rgb_ufloat: + result.tag = ffi::WGPUTextureFormat_Bc6hRgbUfloat; + break; + case dom::GPUTextureFormat::Bc6h_rgb_float: + result.tag = ffi::WGPUTextureFormat_Bc6hRgbFloat; + break; + case dom::GPUTextureFormat::Bc7_rgba_unorm: + result.tag = ffi::WGPUTextureFormat_Bc7RgbaUnorm; + break; + case dom::GPUTextureFormat::Bc7_rgba_unorm_srgb: + result.tag = ffi::WGPUTextureFormat_Bc7RgbaUnormSrgb; + break; + case dom::GPUTextureFormat::Depth24plus: + result.tag = ffi::WGPUTextureFormat_Depth24Plus; + break; + case dom::GPUTextureFormat::Depth24plus_stencil8: + result.tag = ffi::WGPUTextureFormat_Depth24PlusStencil8; + break; + case dom::GPUTextureFormat::Depth32float_stencil8: + result.tag = ffi::WGPUTextureFormat_Depth32FloatStencil8; + break; + case dom::GPUTextureFormat::EndGuard_: + MOZ_ASSERT_UNREACHABLE(); + } + + // Clang will check for us that the switch above is exhaustive, + // but not if we add a 'default' case. So, check this here. + MOZ_ASSERT(result.tag != ffi::WGPUTextureFormat_Sentinel, + "unexpected texture format enum"); + + return result; +} + +void WebGPUChild::ConvertTextureFormatRef(const dom::GPUTextureFormat& aInput, + ffi::WGPUTextureFormat& aOutput) { + aOutput = ConvertTextureFormat(aInput); +} + +static UniquePtr<ffi::WGPUClient> initialize() { + ffi::WGPUInfrastructure infra = ffi::wgpu_client_new(); + return UniquePtr<ffi::WGPUClient>{infra.client}; +} + +WebGPUChild::WebGPUChild() : mClient(initialize()) {} + +WebGPUChild::~WebGPUChild() = default; + +RefPtr<AdapterPromise> WebGPUChild::InstanceRequestAdapter( + const dom::GPURequestAdapterOptions& aOptions) { + const int max_ids = 10; + RawId ids[max_ids] = {0}; + unsigned long count = + ffi::wgpu_client_make_adapter_ids(mClient.get(), ids, max_ids); + + nsTArray<RawId> sharedIds(count); + for (unsigned long i = 0; i != count; ++i) { + sharedIds.AppendElement(ids[i]); + } + + return SendInstanceRequestAdapter(aOptions, sharedIds) + ->Then( + GetCurrentSerialEventTarget(), __func__, + [](ipc::ByteBuf&& aInfoBuf) { + // Ideally, we'd just send an empty ByteBuf, but the IPC code + // complains if the capacity is zero... + // So for the case where an adapter wasn't found, we just + // transfer a single 0u64 in this buffer. + return aInfoBuf.mLen > sizeof(uint64_t) + ? AdapterPromise::CreateAndResolve(std::move(aInfoBuf), + __func__) + : AdapterPromise::CreateAndReject(Nothing(), __func__); + }, + [](const ipc::ResponseRejectReason& aReason) { + return AdapterPromise::CreateAndReject(Some(aReason), __func__); + }); +} + +Maybe<DeviceRequest> WebGPUChild::AdapterRequestDevice( + RawId aSelfId, const dom::GPUDeviceDescriptor& aDesc, + ffi::WGPULimits* aLimits) { + ffi::WGPUDeviceDescriptor desc = {}; + ffi::wgpu_client_fill_default_limits(&desc.limits); + + // webgpu::StringHelper label(aDesc.mLabel); + // desc.label = label.Get(); + + const auto featureBits = Adapter::MakeFeatureBits(aDesc.mRequiredFeatures); + if (!featureBits) { + return Nothing(); + } + desc.features = *featureBits; + + if (aDesc.mRequiredLimits.WasPassed()) { + for (const auto& entry : aDesc.mRequiredLimits.Value().Entries()) { + const uint32_t valueU32 = + entry.mValue < std::numeric_limits<uint32_t>::max() + ? entry.mValue + : std::numeric_limits<uint32_t>::max(); + if (entry.mKey == u"maxTextureDimension1D"_ns) { + desc.limits.max_texture_dimension_1d = valueU32; + } else if (entry.mKey == u"maxTextureDimension2D"_ns) { + desc.limits.max_texture_dimension_2d = valueU32; + } else if (entry.mKey == u"maxTextureDimension3D"_ns) { + desc.limits.max_texture_dimension_3d = valueU32; + } else if (entry.mKey == u"maxTextureArrayLayers"_ns) { + desc.limits.max_texture_array_layers = valueU32; + } else if (entry.mKey == u"maxBindGroups"_ns) { + desc.limits.max_bind_groups = valueU32; + } else if (entry.mKey == + u"maxDynamicUniformBuffersPerPipelineLayout"_ns) { + desc.limits.max_dynamic_uniform_buffers_per_pipeline_layout = valueU32; + } else if (entry.mKey == + u"maxDynamicStorageBuffersPerPipelineLayout"_ns) { + desc.limits.max_dynamic_storage_buffers_per_pipeline_layout = valueU32; + } else if (entry.mKey == u"maxSampledTexturesPerShaderStage"_ns) { + desc.limits.max_sampled_textures_per_shader_stage = valueU32; + } else if (entry.mKey == u"maxSamplersPerShaderStage"_ns) { + desc.limits.max_samplers_per_shader_stage = valueU32; + } else if (entry.mKey == u"maxStorageBuffersPerShaderStage"_ns) { + desc.limits.max_storage_buffers_per_shader_stage = valueU32; + } else if (entry.mKey == u"maxStorageTexturesPerShaderStage"_ns) { + desc.limits.max_storage_textures_per_shader_stage = valueU32; + } else if (entry.mKey == u"maxUniformBuffersPerShaderStage"_ns) { + desc.limits.max_uniform_buffers_per_shader_stage = valueU32; + } else if (entry.mKey == u"maxUniformBufferBindingSize"_ns) { + desc.limits.max_uniform_buffer_binding_size = entry.mValue; + } else if (entry.mKey == u"maxStorageBufferBindingSize"_ns) { + desc.limits.max_storage_buffer_binding_size = entry.mValue; + } else if (entry.mKey == u"minUniformBufferOffsetAlignment"_ns) { + desc.limits.min_uniform_buffer_offset_alignment = valueU32; + } else if (entry.mKey == u"minStorageBufferOffsetAlignment"_ns) { + desc.limits.min_storage_buffer_offset_alignment = valueU32; + } else if (entry.mKey == u"maxVertexBuffers"_ns) { + desc.limits.max_vertex_buffers = valueU32; + } else if (entry.mKey == u"maxVertexAttributes"_ns) { + desc.limits.max_vertex_attributes = valueU32; + } else if (entry.mKey == u"maxVertexBufferArrayStride"_ns) { + desc.limits.max_vertex_buffer_array_stride = valueU32; + } else if (entry.mKey == u"maxComputeWorkgroupSizeX"_ns) { + desc.limits.max_compute_workgroup_size_x = valueU32; + } else if (entry.mKey == u"maxComputeWorkgroupSizeY"_ns) { + desc.limits.max_compute_workgroup_size_y = valueU32; + } else if (entry.mKey == u"maxComputeWorkgroupSizeZ"_ns) { + desc.limits.max_compute_workgroup_size_z = valueU32; + } else if (entry.mKey == u"maxComputeWorkgroupsPerDimension"_ns) { + desc.limits.max_compute_workgroups_per_dimension = valueU32; + } else { + NS_WARNING(nsPrintfCString("Requested limit '%s' is not recognized.", + NS_ConvertUTF16toUTF8(entry.mKey).get()) + .get()); + return Nothing(); + } + + // TODO: maxInterStageShaderComponents + // TODO: maxComputeWorkgroupStorageSize + // TODO: maxComputeInvocationsPerWorkgroup + } + } + + RawId id = ffi::wgpu_client_make_device_id(mClient.get(), aSelfId); + + ByteBuf bb; + ffi::wgpu_client_serialize_device_descriptor(&desc, ToFFI(&bb)); + + DeviceRequest request; + request.mId = id; + request.mPromise = SendAdapterRequestDevice(aSelfId, std::move(bb), id); + *aLimits = desc.limits; + + return Some(std::move(request)); +} + +RawId WebGPUChild::DeviceCreateBuffer(RawId aSelfId, + const dom::GPUBufferDescriptor& aDesc, + ipc::UnsafeSharedMemoryHandle&& aShmem) { + RawId bufferId = ffi::wgpu_client_make_buffer_id(mClient.get(), aSelfId); + if (!SendCreateBuffer(aSelfId, bufferId, aDesc, std::move(aShmem))) { + MOZ_CRASH("IPC failure"); + } + return bufferId; +} + +RawId WebGPUChild::DeviceCreateTexture(RawId aSelfId, + const dom::GPUTextureDescriptor& aDesc) { + ffi::WGPUTextureDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + + // TODO: bug 1773723 + desc.view_formats = {nullptr, 0}; + + if (aDesc.mSize.IsRangeEnforcedUnsignedLongSequence()) { + const auto& seq = aDesc.mSize.GetAsRangeEnforcedUnsignedLongSequence(); + desc.size.width = seq.Length() > 0 ? seq[0] : 1; + desc.size.height = seq.Length() > 1 ? seq[1] : 1; + desc.size.depth_or_array_layers = seq.Length() > 2 ? seq[2] : 1; + } else if (aDesc.mSize.IsGPUExtent3DDict()) { + const auto& dict = aDesc.mSize.GetAsGPUExtent3DDict(); + desc.size.width = dict.mWidth; + desc.size.height = dict.mHeight; + desc.size.depth_or_array_layers = dict.mDepthOrArrayLayers; + } else { + MOZ_CRASH("Unexpected union"); + } + desc.mip_level_count = aDesc.mMipLevelCount; + desc.sample_count = aDesc.mSampleCount; + desc.dimension = ffi::WGPUTextureDimension(aDesc.mDimension); + desc.format = ConvertTextureFormat(aDesc.mFormat); + desc.usage = aDesc.mUsage; + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_texture(mClient.get(), aSelfId, &desc, + ToFFI(&bb)); + if (!SendDeviceAction(aSelfId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RawId WebGPUChild::TextureCreateView( + RawId aSelfId, RawId aDeviceId, + const dom::GPUTextureViewDescriptor& aDesc) { + ffi::WGPUTextureViewDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + + ffi::WGPUTextureFormat format = {ffi::WGPUTextureFormat_Sentinel}; + if (aDesc.mFormat.WasPassed()) { + format = ConvertTextureFormat(aDesc.mFormat.Value()); + desc.format = &format; + } + ffi::WGPUTextureViewDimension dimension = + ffi::WGPUTextureViewDimension_Sentinel; + if (aDesc.mDimension.WasPassed()) { + dimension = ffi::WGPUTextureViewDimension(aDesc.mDimension.Value()); + desc.dimension = &dimension; + } + + // Ideally we'd just do something like "aDesc.mMipLevelCount.ptrOr(nullptr)" + // but dom::Optional does not seem to have very many nice things. + uint32_t mipCount = + aDesc.mMipLevelCount.WasPassed() ? aDesc.mMipLevelCount.Value() : 0; + uint32_t layerCount = + aDesc.mArrayLayerCount.WasPassed() ? aDesc.mArrayLayerCount.Value() : 0; + + desc.aspect = ffi::WGPUTextureAspect(aDesc.mAspect); + desc.base_mip_level = aDesc.mBaseMipLevel; + desc.mip_level_count = aDesc.mMipLevelCount.WasPassed() ? &mipCount : nullptr; + desc.base_array_layer = aDesc.mBaseArrayLayer; + desc.array_layer_count = + aDesc.mArrayLayerCount.WasPassed() ? &layerCount : nullptr; + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_texture_view(mClient.get(), aSelfId, &desc, + ToFFI(&bb)); + if (!SendTextureAction(aSelfId, aDeviceId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RawId WebGPUChild::DeviceCreateSampler(RawId aSelfId, + const dom::GPUSamplerDescriptor& aDesc) { + ffi::WGPUSamplerDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + desc.address_modes[0] = ffi::WGPUAddressMode(aDesc.mAddressModeU); + desc.address_modes[1] = ffi::WGPUAddressMode(aDesc.mAddressModeV); + desc.address_modes[2] = ffi::WGPUAddressMode(aDesc.mAddressModeW); + desc.mag_filter = ffi::WGPUFilterMode(aDesc.mMagFilter); + desc.min_filter = ffi::WGPUFilterMode(aDesc.mMinFilter); + desc.mipmap_filter = ffi::WGPUFilterMode(aDesc.mMipmapFilter); + desc.lod_min_clamp = aDesc.mLodMinClamp; + desc.lod_max_clamp = aDesc.mLodMaxClamp; + + ffi::WGPUCompareFunction comparison = ffi::WGPUCompareFunction_Sentinel; + if (aDesc.mCompare.WasPassed()) { + comparison = ConvertCompareFunction(aDesc.mCompare.Value()); + desc.compare = &comparison; + } + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_sampler(mClient.get(), aSelfId, &desc, + ToFFI(&bb)); + if (!SendDeviceAction(aSelfId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RawId WebGPUChild::DeviceCreateCommandEncoder( + RawId aSelfId, const dom::GPUCommandEncoderDescriptor& aDesc) { + ffi::WGPUCommandEncoderDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_command_encoder(mClient.get(), aSelfId, + &desc, ToFFI(&bb)); + if (!SendDeviceAction(aSelfId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RawId WebGPUChild::CommandEncoderFinish( + RawId aSelfId, RawId aDeviceId, + const dom::GPUCommandBufferDescriptor& aDesc) { + if (!SendCommandEncoderFinish(aSelfId, aDeviceId, aDesc)) { + MOZ_CRASH("IPC failure"); + } + // We rely on knowledge that `CommandEncoderId` == `CommandBufferId` + // TODO: refactor this to truly behave as if the encoder is being finished, + // and a new command buffer ID is being created from it. Resolve the ID + // type aliasing at the place that introduces it: `wgpu-core`. + return aSelfId; +} + +RawId WebGPUChild::RenderBundleEncoderFinish( + ffi::WGPURenderBundleEncoder& aEncoder, RawId aDeviceId, + const dom::GPURenderBundleDescriptor& aDesc) { + ffi::WGPURenderBundleDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + + ipc::ByteBuf bb; + RawId id = ffi::wgpu_client_create_render_bundle( + mClient.get(), &aEncoder, aDeviceId, &desc, ToFFI(&bb)); + + if (!SendDeviceAction(aDeviceId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + + return id; +} + +RawId WebGPUChild::DeviceCreateBindGroupLayout( + RawId aSelfId, const dom::GPUBindGroupLayoutDescriptor& aDesc) { + struct OptionalData { + ffi::WGPUTextureViewDimension dim; + ffi::WGPURawTextureSampleType type; + ffi::WGPUTextureFormat format; + }; + nsTArray<OptionalData> optional(aDesc.mEntries.Length()); + for (const auto& entry : aDesc.mEntries) { + OptionalData data = {}; + if (entry.mTexture.WasPassed()) { + const auto& texture = entry.mTexture.Value(); + data.dim = ffi::WGPUTextureViewDimension(texture.mViewDimension); + switch (texture.mSampleType) { + case dom::GPUTextureSampleType::Float: + data.type = ffi::WGPURawTextureSampleType_Float; + break; + case dom::GPUTextureSampleType::Unfilterable_float: + data.type = ffi::WGPURawTextureSampleType_UnfilterableFloat; + break; + case dom::GPUTextureSampleType::Uint: + data.type = ffi::WGPURawTextureSampleType_Uint; + break; + case dom::GPUTextureSampleType::Sint: + data.type = ffi::WGPURawTextureSampleType_Sint; + break; + case dom::GPUTextureSampleType::Depth: + data.type = ffi::WGPURawTextureSampleType_Depth; + break; + case dom::GPUTextureSampleType::EndGuard_: + MOZ_ASSERT_UNREACHABLE(); + } + } + if (entry.mStorageTexture.WasPassed()) { + const auto& texture = entry.mStorageTexture.Value(); + data.dim = ffi::WGPUTextureViewDimension(texture.mViewDimension); + data.format = ConvertTextureFormat(texture.mFormat); + } + optional.AppendElement(data); + } + + nsTArray<ffi::WGPUBindGroupLayoutEntry> entries(aDesc.mEntries.Length()); + for (size_t i = 0; i < aDesc.mEntries.Length(); ++i) { + const auto& entry = aDesc.mEntries[i]; + ffi::WGPUBindGroupLayoutEntry e = {}; + e.binding = entry.mBinding; + e.visibility = entry.mVisibility; + if (entry.mBuffer.WasPassed()) { + switch (entry.mBuffer.Value().mType) { + case dom::GPUBufferBindingType::Uniform: + e.ty = ffi::WGPURawBindingType_UniformBuffer; + break; + case dom::GPUBufferBindingType::Storage: + e.ty = ffi::WGPURawBindingType_StorageBuffer; + break; + case dom::GPUBufferBindingType::Read_only_storage: + e.ty = ffi::WGPURawBindingType_ReadonlyStorageBuffer; + break; + case dom::GPUBufferBindingType::EndGuard_: + MOZ_ASSERT_UNREACHABLE(); + } + e.has_dynamic_offset = entry.mBuffer.Value().mHasDynamicOffset; + } + if (entry.mTexture.WasPassed()) { + e.ty = ffi::WGPURawBindingType_SampledTexture; + e.view_dimension = &optional[i].dim; + e.texture_sample_type = &optional[i].type; + e.multisampled = entry.mTexture.Value().mMultisampled; + } + if (entry.mStorageTexture.WasPassed()) { + e.ty = entry.mStorageTexture.Value().mAccess == + dom::GPUStorageTextureAccess::Write_only + ? ffi::WGPURawBindingType_WriteonlyStorageTexture + : ffi::WGPURawBindingType_ReadonlyStorageTexture; + e.view_dimension = &optional[i].dim; + e.storage_texture_format = &optional[i].format; + } + if (entry.mSampler.WasPassed()) { + e.ty = ffi::WGPURawBindingType_Sampler; + switch (entry.mSampler.Value().mType) { + case dom::GPUSamplerBindingType::Filtering: + e.sampler_filter = true; + break; + case dom::GPUSamplerBindingType::Non_filtering: + break; + case dom::GPUSamplerBindingType::Comparison: + e.sampler_compare = true; + break; + case dom::GPUSamplerBindingType::EndGuard_: + MOZ_ASSERT_UNREACHABLE(); + } + } + entries.AppendElement(e); + } + + ffi::WGPUBindGroupLayoutDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + desc.entries = entries.Elements(); + desc.entries_length = entries.Length(); + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_bind_group_layout(mClient.get(), aSelfId, + &desc, ToFFI(&bb)); + if (!SendDeviceAction(aSelfId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RawId WebGPUChild::DeviceCreatePipelineLayout( + RawId aSelfId, const dom::GPUPipelineLayoutDescriptor& aDesc) { + nsTArray<ffi::WGPUBindGroupLayoutId> bindGroupLayouts( + aDesc.mBindGroupLayouts.Length()); + for (const auto& layout : aDesc.mBindGroupLayouts) { + if (!layout->IsValid()) { + return 0; + } + bindGroupLayouts.AppendElement(layout->mId); + } + + ffi::WGPUPipelineLayoutDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + desc.bind_group_layouts = bindGroupLayouts.Elements(); + desc.bind_group_layouts_length = bindGroupLayouts.Length(); + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_pipeline_layout(mClient.get(), aSelfId, + &desc, ToFFI(&bb)); + if (!SendDeviceAction(aSelfId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RawId WebGPUChild::DeviceCreateBindGroup( + RawId aSelfId, const dom::GPUBindGroupDescriptor& aDesc) { + if (!aDesc.mLayout->IsValid()) { + return 0; + } + + nsTArray<ffi::WGPUBindGroupEntry> entries(aDesc.mEntries.Length()); + for (const auto& entry : aDesc.mEntries) { + ffi::WGPUBindGroupEntry e = {}; + e.binding = entry.mBinding; + if (entry.mResource.IsGPUBufferBinding()) { + const auto& bufBinding = entry.mResource.GetAsGPUBufferBinding(); + e.buffer = bufBinding.mBuffer->mId; + e.offset = bufBinding.mOffset; + e.size = bufBinding.mSize.WasPassed() ? bufBinding.mSize.Value() : 0; + } + if (entry.mResource.IsGPUTextureView()) { + e.texture_view = entry.mResource.GetAsGPUTextureView()->mId; + } + if (entry.mResource.IsGPUSampler()) { + e.sampler = entry.mResource.GetAsGPUSampler()->mId; + } + entries.AppendElement(e); + } + + ffi::WGPUBindGroupDescriptor desc = {}; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + desc.layout = aDesc.mLayout->mId; + desc.entries = entries.Elements(); + desc.entries_length = entries.Length(); + + ByteBuf bb; + RawId id = ffi::wgpu_client_create_bind_group(mClient.get(), aSelfId, &desc, + ToFFI(&bb)); + if (!SendDeviceAction(aSelfId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +MOZ_CAN_RUN_SCRIPT void reportCompilationMessagesToConsole( + const RefPtr<ShaderModule>& aShaderModule, + const nsTArray<WebGPUCompilationMessage>& aMessages) { + auto* global = aShaderModule->GetParentObject(); + + dom::AutoJSAPI api; + if (!api.Init(global)) { + return; + } + + const auto& cx = api.cx(); + + ErrorResult rv; + RefPtr<dom::Console> console = + nsGlobalWindowInner::Cast(global->AsInnerWindow())->GetConsole(cx, rv); + if (rv.Failed()) { + return; + } + + dom::GlobalObject globalObj(cx, global->GetGlobalJSObject()); + + dom::Sequence<JS::Value> args; + dom::SequenceRooter<JS::Value> msgArgsRooter(cx, &args); + auto SetSingleStrAsArgs = + [&](const nsString& message, dom::Sequence<JS::Value>* args) + MOZ_CAN_RUN_SCRIPT { + args->Clear(); + JS::Rooted<JSString*> jsStr( + cx, JS_NewUCStringCopyN(cx, message.Data(), message.Length())); + if (!jsStr) { + return; + } + JS::Rooted<JS::Value> val(cx, JS::StringValue(jsStr)); + if (!args->AppendElement(val, fallible)) { + return; + } + }; + + nsString label; + aShaderModule->GetLabel(label); + auto appendNiceLabelIfPresent = [&label](nsString* buf) MOZ_CAN_RUN_SCRIPT { + if (!label.IsEmpty()) { + buf->AppendLiteral(u" \""); + buf->Append(label); + buf->AppendLiteral(u"\""); + } + }; + + // We haven't actually inspected a message for severity, but + // it doesn't actually matter, since we don't do anything at + // this level. + auto highestSeveritySeen = WebGPUCompilationMessageType::Info; + uint64_t errorCount = 0; + uint64_t warningCount = 0; + uint64_t infoCount = 0; + for (const auto& message : aMessages) { + bool higherThanSeen = + static_cast<std::underlying_type_t<WebGPUCompilationMessageType>>( + message.messageType) < + static_cast<std::underlying_type_t<WebGPUCompilationMessageType>>( + highestSeveritySeen); + if (higherThanSeen) { + highestSeveritySeen = message.messageType; + } + switch (message.messageType) { + case WebGPUCompilationMessageType::Error: + errorCount += 1; + break; + case WebGPUCompilationMessageType::Warning: + warningCount += 1; + break; + case WebGPUCompilationMessageType::Info: + infoCount += 1; + break; + } + } + switch (highestSeveritySeen) { + case WebGPUCompilationMessageType::Info: + // shouldn't happen, but :shrug: + break; + case WebGPUCompilationMessageType::Warning: { + nsString msg( + u"Encountered one or more warnings while creating shader module"); + appendNiceLabelIfPresent(&msg); + SetSingleStrAsArgs(msg, &args); + console->Warn(globalObj, args); + break; + } + case WebGPUCompilationMessageType::Error: { + nsString msg( + u"Encountered one or more errors while creating shader module"); + appendNiceLabelIfPresent(&msg); + SetSingleStrAsArgs(msg, &args); + console->Error(globalObj, args); + break; + } + } + + nsString header; + header.AppendLiteral(u"WebGPU compilation info for shader module"); + appendNiceLabelIfPresent(&header); + header.AppendLiteral(u" ("); + header.AppendInt(errorCount); + header.AppendLiteral(u" error(s), "); + header.AppendInt(warningCount); + header.AppendLiteral(u" warning(s), "); + header.AppendInt(infoCount); + header.AppendLiteral(u" info)"); + SetSingleStrAsArgs(header, &args); + console->GroupCollapsed(globalObj, args); + + for (const auto& message : aMessages) { + SetSingleStrAsArgs(message.message, &args); + switch (message.messageType) { + case WebGPUCompilationMessageType::Error: + console->Error(globalObj, args); + break; + case WebGPUCompilationMessageType::Warning: + console->Warn(globalObj, args); + break; + case WebGPUCompilationMessageType::Info: + console->Info(globalObj, args); + break; + } + } + console->GroupEnd(globalObj); +} + +MOZ_CAN_RUN_SCRIPT_FOR_DEFINITION already_AddRefed<ShaderModule> +WebGPUChild::DeviceCreateShaderModule( + Device& aDevice, const dom::GPUShaderModuleDescriptor& aDesc, + RefPtr<dom::Promise> aPromise) { + RawId deviceId = aDevice.mId; + RawId moduleId = + ffi::wgpu_client_make_shader_module_id(mClient.get(), deviceId); + + RefPtr<ShaderModule> shaderModule = + new ShaderModule(&aDevice, moduleId, aPromise); + + nsString noLabel; + nsString& label = noLabel; + if (aDesc.mLabel.WasPassed()) { + label = aDesc.mLabel.Value(); + shaderModule->SetLabel(label); + } + SendDeviceCreateShaderModule(deviceId, moduleId, label, aDesc.mCode) + ->Then( + GetCurrentSerialEventTarget(), __func__, + [aPromise, + shaderModule](nsTArray<WebGPUCompilationMessage>&& messages) + MOZ_CAN_RUN_SCRIPT { + if (!messages.IsEmpty()) { + reportCompilationMessagesToConsole(shaderModule, + std::cref(messages)); + } + RefPtr<CompilationInfo> infoObject( + new CompilationInfo(shaderModule)); + infoObject->SetMessages(messages); + aPromise->MaybeResolve(infoObject); + }, + [aPromise](const ipc::ResponseRejectReason& aReason) { + aPromise->MaybeRejectWithNotSupportedError("IPC error"); + }); + + return shaderModule.forget(); +} + +RawId WebGPUChild::DeviceCreateComputePipelineImpl( + PipelineCreationContext* const aContext, + const dom::GPUComputePipelineDescriptor& aDesc, ByteBuf* const aByteBuf) { + ffi::WGPUComputePipelineDescriptor desc = {}; + nsCString label, entryPoint; + if (aDesc.mLabel.WasPassed()) { + CopyUTF16toUTF8(aDesc.mLabel.Value(), label); + desc.label = label.get(); + } + if (aDesc.mLayout.IsGPUAutoLayoutMode()) { + desc.layout = 0; + } else if (aDesc.mLayout.IsGPUPipelineLayout()) { + desc.layout = aDesc.mLayout.GetAsGPUPipelineLayout()->mId; + } else { + MOZ_ASSERT_UNREACHABLE(); + } + desc.stage.module = aDesc.mCompute.mModule->mId; + CopyUTF16toUTF8(aDesc.mCompute.mEntryPoint, entryPoint); + desc.stage.entry_point = entryPoint.get(); + + RawId implicit_bgl_ids[WGPUMAX_BIND_GROUPS] = {}; + RawId id = ffi::wgpu_client_create_compute_pipeline( + mClient.get(), aContext->mParentId, &desc, ToFFI(aByteBuf), + &aContext->mImplicitPipelineLayoutId, implicit_bgl_ids); + + for (const auto& cur : implicit_bgl_ids) { + if (!cur) break; + aContext->mImplicitBindGroupLayoutIds.AppendElement(cur); + } + + return id; +} + +RawId WebGPUChild::DeviceCreateComputePipeline( + PipelineCreationContext* const aContext, + const dom::GPUComputePipelineDescriptor& aDesc) { + ByteBuf bb; + const RawId id = DeviceCreateComputePipelineImpl(aContext, aDesc, &bb); + + if (!SendDeviceAction(aContext->mParentId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RefPtr<PipelinePromise> WebGPUChild::DeviceCreateComputePipelineAsync( + PipelineCreationContext* const aContext, + const dom::GPUComputePipelineDescriptor& aDesc) { + ByteBuf bb; + const RawId id = DeviceCreateComputePipelineImpl(aContext, aDesc, &bb); + + return SendDeviceActionWithAck(aContext->mParentId, std::move(bb)) + ->Then( + GetCurrentSerialEventTarget(), __func__, + [id](bool aDummy) { + Unused << aDummy; + return PipelinePromise::CreateAndResolve(id, __func__); + }, + [](const ipc::ResponseRejectReason& aReason) { + return PipelinePromise::CreateAndReject(aReason, __func__); + }); +} + +static ffi::WGPUMultisampleState ConvertMultisampleState( + const dom::GPUMultisampleState& aDesc) { + ffi::WGPUMultisampleState desc = {}; + desc.count = aDesc.mCount; + desc.mask = aDesc.mMask; + desc.alpha_to_coverage_enabled = aDesc.mAlphaToCoverageEnabled; + return desc; +} + +static ffi::WGPUBlendComponent ConvertBlendComponent( + const dom::GPUBlendComponent& aDesc) { + ffi::WGPUBlendComponent desc = {}; + desc.src_factor = ffi::WGPUBlendFactor(aDesc.mSrcFactor); + desc.dst_factor = ffi::WGPUBlendFactor(aDesc.mDstFactor); + desc.operation = ffi::WGPUBlendOperation(aDesc.mOperation); + return desc; +} + +static ffi::WGPUStencilFaceState ConvertStencilFaceState( + const dom::GPUStencilFaceState& aDesc) { + ffi::WGPUStencilFaceState desc = {}; + desc.compare = ConvertCompareFunction(aDesc.mCompare); + desc.fail_op = ffi::WGPUStencilOperation(aDesc.mFailOp); + desc.depth_fail_op = ffi::WGPUStencilOperation(aDesc.mDepthFailOp); + desc.pass_op = ffi::WGPUStencilOperation(aDesc.mPassOp); + return desc; +} + +static ffi::WGPUDepthStencilState ConvertDepthStencilState( + const dom::GPUDepthStencilState& aDesc) { + ffi::WGPUDepthStencilState desc = {}; + desc.format = ConvertTextureFormat(aDesc.mFormat); + desc.depth_write_enabled = aDesc.mDepthWriteEnabled; + desc.depth_compare = ConvertCompareFunction(aDesc.mDepthCompare); + desc.stencil.front = ConvertStencilFaceState(aDesc.mStencilFront); + desc.stencil.back = ConvertStencilFaceState(aDesc.mStencilBack); + desc.stencil.read_mask = aDesc.mStencilReadMask; + desc.stencil.write_mask = aDesc.mStencilWriteMask; + desc.bias.constant = aDesc.mDepthBias; + desc.bias.slope_scale = aDesc.mDepthBiasSlopeScale; + desc.bias.clamp = aDesc.mDepthBiasClamp; + return desc; +} + +RawId WebGPUChild::DeviceCreateRenderPipelineImpl( + PipelineCreationContext* const aContext, + const dom::GPURenderPipelineDescriptor& aDesc, ByteBuf* const aByteBuf) { + // A bunch of stack locals that we can have pointers into + nsTArray<ffi::WGPUVertexBufferLayout> vertexBuffers; + nsTArray<ffi::WGPUVertexAttribute> vertexAttributes; + ffi::WGPURenderPipelineDescriptor desc = {}; + nsCString vsEntry, fsEntry; + ffi::WGPUIndexFormat stripIndexFormat = ffi::WGPUIndexFormat_Uint16; + ffi::WGPUFace cullFace = ffi::WGPUFace_Front; + ffi::WGPUVertexState vertexState = {}; + ffi::WGPUFragmentState fragmentState = {}; + nsTArray<ffi::WGPUColorTargetState> colorStates; + nsTArray<ffi::WGPUBlendState> blendStates; + + webgpu::StringHelper label(aDesc.mLabel); + desc.label = label.Get(); + + if (aDesc.mLayout.IsGPUAutoLayoutMode()) { + desc.layout = 0; + } else if (aDesc.mLayout.IsGPUPipelineLayout()) { + desc.layout = aDesc.mLayout.GetAsGPUPipelineLayout()->mId; + } else { + MOZ_ASSERT_UNREACHABLE(); + } + + { + const auto& stage = aDesc.mVertex; + vertexState.stage.module = stage.mModule->mId; + CopyUTF16toUTF8(stage.mEntryPoint, vsEntry); + vertexState.stage.entry_point = vsEntry.get(); + + for (const auto& vertex_desc : stage.mBuffers) { + ffi::WGPUVertexBufferLayout vb_desc = {}; + if (!vertex_desc.IsNull()) { + const auto& vd = vertex_desc.Value(); + vb_desc.array_stride = vd.mArrayStride; + vb_desc.step_mode = ffi::WGPUVertexStepMode(vd.mStepMode); + // Note: we are setting the length but not the pointer + vb_desc.attributes_length = vd.mAttributes.Length(); + for (const auto& vat : vd.mAttributes) { + ffi::WGPUVertexAttribute ad = {}; + ad.offset = vat.mOffset; + ad.format = ffi::WGPUVertexFormat(vat.mFormat); + ad.shader_location = vat.mShaderLocation; + vertexAttributes.AppendElement(ad); + } + } + vertexBuffers.AppendElement(vb_desc); + } + // Now patch up all the pointers to attribute lists. + size_t numAttributes = 0; + for (auto& vb_desc : vertexBuffers) { + vb_desc.attributes = vertexAttributes.Elements() + numAttributes; + numAttributes += vb_desc.attributes_length; + } + + vertexState.buffers = vertexBuffers.Elements(); + vertexState.buffers_length = vertexBuffers.Length(); + desc.vertex = &vertexState; + } + + if (aDesc.mFragment.WasPassed()) { + const auto& stage = aDesc.mFragment.Value(); + fragmentState.stage.module = stage.mModule->mId; + CopyUTF16toUTF8(stage.mEntryPoint, fsEntry); + fragmentState.stage.entry_point = fsEntry.get(); + + // Note: we pre-collect the blend states into a different array + // so that we can have non-stale pointers into it. + for (const auto& colorState : stage.mTargets) { + ffi::WGPUColorTargetState desc = {}; + desc.format = ConvertTextureFormat(colorState.mFormat); + desc.write_mask = colorState.mWriteMask; + colorStates.AppendElement(desc); + ffi::WGPUBlendState bs = {}; + if (colorState.mBlend.WasPassed()) { + const auto& blend = colorState.mBlend.Value(); + bs.alpha = ConvertBlendComponent(blend.mAlpha); + bs.color = ConvertBlendComponent(blend.mColor); + } + blendStates.AppendElement(bs); + } + for (size_t i = 0; i < colorStates.Length(); ++i) { + if (stage.mTargets[i].mBlend.WasPassed()) { + colorStates[i].blend = &blendStates[i]; + } + } + + fragmentState.targets = colorStates.Elements(); + fragmentState.targets_length = colorStates.Length(); + desc.fragment = &fragmentState; + } + + { + const auto& prim = aDesc.mPrimitive; + desc.primitive.topology = ffi::WGPUPrimitiveTopology(prim.mTopology); + if (prim.mStripIndexFormat.WasPassed()) { + stripIndexFormat = ffi::WGPUIndexFormat(prim.mStripIndexFormat.Value()); + desc.primitive.strip_index_format = &stripIndexFormat; + } + desc.primitive.front_face = ffi::WGPUFrontFace(prim.mFrontFace); + if (prim.mCullMode != dom::GPUCullMode::None) { + cullFace = prim.mCullMode == dom::GPUCullMode::Front ? ffi::WGPUFace_Front + : ffi::WGPUFace_Back; + desc.primitive.cull_mode = &cullFace; + } + } + desc.multisample = ConvertMultisampleState(aDesc.mMultisample); + + ffi::WGPUDepthStencilState depthStencilState = {}; + if (aDesc.mDepthStencil.WasPassed()) { + depthStencilState = ConvertDepthStencilState(aDesc.mDepthStencil.Value()); + desc.depth_stencil = &depthStencilState; + } + + RawId implicit_bgl_ids[WGPUMAX_BIND_GROUPS] = {}; + RawId id = ffi::wgpu_client_create_render_pipeline( + mClient.get(), aContext->mParentId, &desc, ToFFI(aByteBuf), + &aContext->mImplicitPipelineLayoutId, implicit_bgl_ids); + + for (const auto& cur : implicit_bgl_ids) { + if (!cur) break; + aContext->mImplicitBindGroupLayoutIds.AppendElement(cur); + } + + return id; +} + +RawId WebGPUChild::DeviceCreateRenderPipeline( + PipelineCreationContext* const aContext, + const dom::GPURenderPipelineDescriptor& aDesc) { + ByteBuf bb; + const RawId id = DeviceCreateRenderPipelineImpl(aContext, aDesc, &bb); + + if (!SendDeviceAction(aContext->mParentId, std::move(bb))) { + MOZ_CRASH("IPC failure"); + } + return id; +} + +RefPtr<PipelinePromise> WebGPUChild::DeviceCreateRenderPipelineAsync( + PipelineCreationContext* const aContext, + const dom::GPURenderPipelineDescriptor& aDesc) { + ByteBuf bb; + const RawId id = DeviceCreateRenderPipelineImpl(aContext, aDesc, &bb); + + return SendDeviceActionWithAck(aContext->mParentId, std::move(bb)) + ->Then( + GetCurrentSerialEventTarget(), __func__, + [id](bool aDummy) { + Unused << aDummy; + return PipelinePromise::CreateAndResolve(id, __func__); + }, + [](const ipc::ResponseRejectReason& aReason) { + return PipelinePromise::CreateAndReject(aReason, __func__); + }); +} + +ipc::IPCResult WebGPUChild::RecvDeviceUncapturedError( + RawId aDeviceId, const nsACString& aMessage) { + auto targetIter = mDeviceMap.find(aDeviceId); + if (!aDeviceId || targetIter == mDeviceMap.end()) { + JsWarning(nullptr, aMessage); + } else { + auto* target = targetIter->second.get(); + MOZ_ASSERT(target); + // We don't want to spam the errors to the console indefinitely + if (target->CheckNewWarning(aMessage)) { + JsWarning(target->GetOwnerGlobal(), aMessage); + + dom::GPUUncapturedErrorEventInit init; + init.mError.SetAsGPUValidationError() = + new ValidationError(target->GetParentObject(), aMessage); + RefPtr<mozilla::dom::GPUUncapturedErrorEvent> event = + dom::GPUUncapturedErrorEvent::Constructor( + target, u"uncapturederror"_ns, init); + target->DispatchEvent(*event); + } + } + return IPC_OK(); +} + +ipc::IPCResult WebGPUChild::RecvDropAction(const ipc::ByteBuf& aByteBuf) { + const auto* byteBuf = ToFFI(&aByteBuf); + ffi::wgpu_client_drop_action(mClient.get(), byteBuf); + return IPC_OK(); +} + +void WebGPUChild::DeviceCreateSwapChain( + RawId aSelfId, const RGBDescriptor& aRgbDesc, size_t maxBufferCount, + const layers::RemoteTextureOwnerId& aOwnerId) { + RawId queueId = aSelfId; // TODO: multiple queues + nsTArray<RawId> bufferIds(maxBufferCount); + for (size_t i = 0; i < maxBufferCount; ++i) { + bufferIds.AppendElement( + ffi::wgpu_client_make_buffer_id(mClient.get(), aSelfId)); + } + SendDeviceCreateSwapChain(aSelfId, queueId, aRgbDesc, bufferIds, aOwnerId); +} + +void WebGPUChild::SwapChainPresent(RawId aTextureId, + const RemoteTextureId& aRemoteTextureId, + const RemoteTextureOwnerId& aOwnerId) { + // Hack: the function expects `DeviceId`, but it only uses it for `backend()` + // selection. + RawId encoderId = ffi::wgpu_client_make_encoder_id(mClient.get(), aTextureId); + SendSwapChainPresent(aTextureId, encoderId, aRemoteTextureId, aOwnerId); +} + +void WebGPUChild::RegisterDevice(Device* const aDevice) { + mDeviceMap.insert({aDevice->mId, aDevice}); +} + +void WebGPUChild::UnregisterDevice(RawId aId) { + mDeviceMap.erase(aId); + if (IsOpen()) { + SendDeviceDestroy(aId); + } +} + +void WebGPUChild::FreeUnregisteredInParentDevice(RawId aId) { + ffi::wgpu_client_kill_device_id(mClient.get(), aId); + mDeviceMap.erase(aId); +} + +void WebGPUChild::ActorDestroy(ActorDestroyReason) { + // Resolving the promise could cause us to update the original map if the + // callee frees the Device objects immediately. Since any remaining entries + // in the map are no longer valid, we can just move the map onto the stack. + const auto deviceMap = std::move(mDeviceMap); + mDeviceMap.clear(); + + for (const auto& targetIter : deviceMap) { + RefPtr<Device> device = targetIter.second.get(); + if (!device) { + // The Device may have gotten freed when we resolved the Promise for + // another Device in the map. + continue; + } + + RefPtr<dom::Promise> promise = device->MaybeGetLost(); + if (!promise) { + continue; + } + + auto info = MakeRefPtr<DeviceLostInfo>(device->GetParentObject(), + u"WebGPUChild destroyed"_ns); + + // We have strong references to both the Device and the DeviceLostInfo and + // the Promise objects on the stack which keeps them alive for long enough. + promise->MaybeResolve(info); + } +} + +} // namespace mozilla::webgpu |